from Crypto.Util.number import * from flag import flag flag = bytes_to_long(flag) p = getPrime(80) q = getPrime(80) n = p * q e = 65537 print(n) phi = (p - 1) * (q - 1) d = inverse(e, phi) cipher = pow(flag, e, n) print(cipher) flag = pow(cipher, d, n) flag = long_to_bytes(flag) print(flag) with open("cipher.txt", "w") as f: f.write(f"n = {n}\n") f.write(f"e = {e}\n") f.write(f"cipher = {cipher}\n")